Vibratory backfill compacter



Nov. 22, 1949 c. JACKSON VIBRATORY BACK FILL COMPACTER Filed Oct. 30, 1946 4 TTORNEY.

rial and may be employed to substantially elimi nate hand labor in the distribution and compacting of the material in the back fill cavity. The

material is compacted to such an extent that the pavement may be immediately laid over the material without the likelihood of the pavement be coming displaced as a result of settling of the fill material. The machine is 'adapated for use in distributing and compacting materials in various other relations where bull-dozing and compacting action is desirable.

I have illustrated and described my invention in a highly practical embodiment thereof. I have not attempted to illustrate or describe certain modifications and adaptations which I contemplate as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a machine of the class described, the combination of spaced parallel elongated front and rear vibratory members of cylindrical section, the front member being provided with a downwardly projecting earth digging and spreading blade extending lengthwise said front member and disposed tangentially thereof, cross bars rigidly connecting said vibratory members, said cross bars being spaced longitudinally of the vibratory members and being disposed centrally relative thereto, the front vibratory member being rotatably connected to said cross bars whereby the angle of the blade to the vertical may be varied to vary the digging and spreading action of said blade, a motor provided with an unbalanced rotor mounted on said cross bars with its axis disposed transversely of the vibratory members, a draft cable having rearwardly diverging hitch members connected to said front vibratory member in substantially spaced relation to the longitudinal center thereof, and a lifting cable connected to said cross bars by four diverging hitch members whereby the lifting cable is substantially centered relative to the assembled parts, the unbalanced rotor being 'disposed within the angle formed by the lines of direction of said diverging hitch members of the draft cable.

2. In a machine of the class described, the combination of spaced parallel elongated front and rear vibratory members, the front member being provided with a downwardly projecting earth digging and spreading blade extending lengthwise said front member, cross bars rigidly connecting said vibratory members, said cross bars being spaced longitudinally of the vibratory members and being disposed centrally relative thereto, a motor provided with an unbalanced rotor mounted on said cross bars, a draft cable having rearwardly diverging hitch members connected to said front vibratory member in substantially spaced relation to the longitudinal center thereof, and a lifting cable connected to said cross bars by four diverging hitch members whereby the lifting cable is substantially centered relative to the assembled parts, the unbalanced rotor being disposed Within the 'angleformed-by' the lines of direction of said diverging hitch members of the draft cable.

3. In a machine of the class described, the combination of spaced parallel elongated front and rear vibratory members, the front member being provided with a downwardly projecting earth digging and spreading blade extending lengthwise said front member,'cro'ss bars connecting said vibratory members, the front vibratory member being adjustably connected to said cross bars whereby the angle of the blade may be varied to vary the digging and spreading action of said blade, a motor provided with an unbalanced rotor mounted on said cross bars, a

draft means, and a lifting cable.

4. In a machine of the class described, the

- combination of spaced parallel elongated front and rear vibratory members, the front member being provided with a. downwardly projecting earth digging and spreading blade extending lengthwise said front member, cross bars connecting said vibratory members, a motor provided with an unbalanced-rotor mounted on said cross bars, and means for propelling said vibratory members whilethey'are in supported rela tion to the work. 7

5. In a machine of "the class described, the combination of elongated front and rear submersible vibratory members, the front member being provided with a downwardly projecting earth digging and spreading blade extending lengthwise said front member, cross members rigidly connecting said vibratory members, the front vibratory member being rotatably connected to said cross members whereby the angle of the blade to the vertical may be varied to vary the digging and spreading action of: said blade, a motor provided with an unbalanced rotor mounted on said cross members, a draft cable connected to said front vibratorymember in draft balancing rela: tion thereto, and a lifting cable connected to said vibratory members in lifting balancing relation thereto.

6. In a machine of the class described, thewith a downwardly projecting earth digging and" spreading blade extending lengthwise said front member, cross bars rigidly connecting said vibratory members, the front vibratory member being rotatably connected .to said cross bars whereby the angle of the blade tofthe'vertical may be varied to vary thedigging and spreading action of said blade, and an'unbalanced rotormounted on said cross bars.

8. In a machine 'of the class. described, the combination of elongated submersible vibratory members connected at spaced trailing relation,

the front member beingprovided with. a down-1 wardly projectingearth "digging and spreading blade extending lengthwise said front member and being rotatably mounted whereby: the angle of the blade to'the vertical may be varied to vary the digging and spreading action 'of'said blade,

and means carried by said vibratory members for imparting high frequency vibration thereto.

9. In a machine of the class described, the combination of elongated vibratory members connected at spaced trailing relation, the front member being provided with a downwardly projecting earth digging and spreading blade extending lengthwise said front member, and means carried by said vibratory members for imparting high frequency vibration thereto.

10. In a machine of the class described, the combination of elongated submersible vibratory members connected at spaced trailing relation, the front member being provided with a downwardly projecting earth digging and spreading blade extending lengthwise said front member and being rotatably mounted whereby the angle of the blade to the vertical may be varied to vary the digging and spreading action of said blade, means carried by said vibratory members for imparting high frequency vibration thereto, a draft cable for said vibratory members, and a lifting cable for said vibratory members.

11. In a machine of the class described, the combination of elongated submersible vibratory members connected in spaced trailing relation, one of the members being provided with a downwardly projecting earth digging and spreading blade extending lengthwise said member, means for vibrating said vibratory members, and means for propelling said vibratory members while the machine is supported by the material treated.

12. In a machine of the class described, the combination of elongated submersible vibratory members connected in spaced trailing relation, one of the members being provided with earth digging and spreading means projecting downwardly from said member and disposed lengthwise thereof, and means for vibrating said vibratory members at high frequency.

13. In a machine of the class described comprising an elongated submersible vibratory member of cylindrical section having a downwardly projecting longitudinally extending earth spreading blade disposed tangentially thereon, said vi- 4 bratory member being mounted for rotative adjustment whereby the angle of the blade to the vertical may be varied to vary the digging and spreading action of said blade, means for vibrating said vibratory member, and flexible means for propelling the member while it is floatingly supported by the material treated.

14. In a machine of the class described comprising an elongated submersible vibratory member having earth digging and spreading means projecting downwardly from said member and disposed lengthwise thereof, means for vibrating said vibratory member, and means for propelling the said member and said digging and spreading means thereon sidewise and with said digging and spreading means projecting downwardly while the member and said digging and spreading means are floatingly supported by the material treated.

15. In a machine of the class described, the combination of elongated vibratory members, one of which is provided with a downwardly projecting earth digging and spreading blade extending lengthwise said member, said members being connected in trailing relation and being adapted to be supported by the material treated, means for vibrating said vibratory members at high frequency carried thereby, means for propelling said vibratory members flexibly connected thereto, and means for lifting said vibratory members flexibly connected thereto.

16. In a machine of the class described, the combination of elongated vibratory members, one of which is provided with a downwardly projecting earth digging and spreading blade extending lengthwise said member, said members being connected in trailing relation and being adapted to be supported by the material treated, and means for vibrating said vibratory members at high frequency carried thereby.

CORWILL JACKSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,691,100 Wilson Nov. 13, 1928 1,731,985 Reaney Oct. 15, 1929 2,306,123 Jackson Dec. 22, 1942 2,332,687 Baily Oct. 26, 1943 

